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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 5 |
| 3 | 5 |
| 4 | 11 |
| 5 | 18 |
| 6 | 62 |
| 7 | 133 |
| 8 | 749 |
| 9 | 2248 |
| 10 | 11243 |
| 11 | 43303 |
| 12 | 213698 |
| 13 | 862571 |
| 14 | 4209880 |
| 15 | 18541760 |
| 16 | 85912154 |
| 17 | 391299596 |
| 18 | 1813446809 |
| 19 | 8242953615 |
| 20 | 38135967993 |
| 21 | 174709622116 |
| 22 | 803464643771 |
| 23 | 3690832801362 |
| 24 | 16981747383158 |
| 25 | 77971455891314 |
[0,5,5,11,18,62,133,749,2248,11243,43303,213698, 862571,4209880,18541760,85912154,391299596, 1813446809,8242953615,38135967993,174709622116, 803464643771,3690832801362,16981747383158, 77971455891314] |